US Patent 7217267 Hair treatment method

A hair treatment device includes a generator of electromagnetic radiation and optical guide components operatively connected to the generator so as to direct electromagnetic radiation from the generator away from entering a skin surface and in a direction substantially parallel to the skin surface, to impinge on hair fibers protruding from the skin surface. A control unit is connected to the generator for controlling the generator to produce the electromagnetic radiation in bursts of light pulses each having a predetermined number of pulses of light for treating the hair fibers protruding from the skin surface.